My car bounces?

[krn986]

? I ment IN 1st gear i take off no clutch no changing gears it just bounces up...not during gear changes.

[David N.]

That just happened to me last night. I was going down a side road I never go down, was in rolling in first gear at 10 or so, decided to punch it a bit and got this horrid thumping, traction light going off like mad. At first I thought road since it was a little crappy, but I drove further down and tried it again, same result. Scared the hell out of me, thought maybe it was something with the suspension to induce rabid axle hop or maybe even the wheel was bent or something. Got out, checked it, looked fine and I was at my destination.

I pushed it again later that in the night on a road I'm used to tho, and it was smooth sailing. I tried again once or twice today and no problems. I'm thinking it was a mixture of cold tires, cold foggy night, bad road, and just minute slippage+hop. I'm very good to my tranny, double clutch all downshifts and never slip it above 2k. For me, fun is just winding it out from 3-6k once or twice, so I think in this case it was just bad circumstances.

-David

[krn986]

Originally Posted by David N.

That just happened to me last night. I was going down a side road I never go down, was in rolling in first gear at 10 or so, decided to punch it a bit and got this horrid thumping, traction light going off like mad. At first I thought road since it was a little crappy, but I drove further down and tried it again, same result. Scared the hell out of me, thought maybe it was something with the suspension to induce rabid axle hop or maybe even the wheel was bent or something. Got out, checked it, looked fine and I was at my destination.

I pushed it again later that in the night on a road I'm used to tho, and it was smooth sailing. I tried again once or twice today and no problems. I'm thinking it was a mixture of cold tires, cold foggy night, bad road, and just minute slippage+hop. I'm very good to my tranny, double clutch all downshifts and never slip it above 2k. For me, fun is just winding it out from 3-6k once or twice, so I think in this case it was just bad circumstances.

-David

+1 it was a rainy day in seattle and i felt like takin the boxster out, i did that and my car was just thumping along and as i hit 2nd gear the car was smooth then.

[David N.]

Spoke to a friend of mine today about it, he once had the same issue on his 300zx. And for a car with 320hp that should simply be spinning the tires, it was pretty weird. His fix was removing the excessly bouncy rubber suspension bushings and going with a much tighter swingarm setup.

The moral of the story, I think the suspension type in a Boxster might also have something to do with it, for the same reason the Boxster is prone to axle hop. It's a car more likely to hop than simply spin, I guess the price paid for an intermediately plush ride on a sport suspension.

-David